WO2020029809A1

WO2020029809A1 - Wind power generation system

Info

Publication number: WO2020029809A1
Application number: PCT/CN2019/097838
Authority: WO
Inventors: 尉立
Original assignee: 昆山新盟能源技术有限公司
Priority date: 2018-08-08
Filing date: 2019-07-26
Publication date: 2020-02-13

Abstract

The present invention provides a wind power generation system, comprising: blades, a hub shaft, a tower and a power generation device. In the present invention, a dragging belt transmission method is adopted, two power input units being connected to a speed control sleeve shaft by means of a composite steel belt, for driving a gear set and a generator to work.

Description

Wind power system

Technical field

The invention relates to the technical field of wind power generation, in particular to a wind power generation system.

Background technique

Wind power is the conversion of wind's kinetic energy into electricity. Because wind energy is a clean energy, the use of wind power is very environmentally friendly, and the amount of electricity generated is very large. Therefore, more and more countries pay more attention to wind power. At present, wind power mainly relies on wind turbines. Among them, the working principle of wind turbines is to use wind to drive windmill blades to rotate, and then increase the speed of rotation through the gearbox to promote generators to generate electricity or use large permanent magnets without increasing speed. Direct-drive generators work with expensive full-power frequency converters. However, the wind turbine based on the above working principle needs to rely on the gearbox, which causes the internal structure of the wind turbine to be very complicated; or it is costly to use a permanent magnet direct drive generator in conjunction with a full power inverter. At the same time, the existing wind turbines are relatively heavy, thereby increasing the load requirements and costs for the entire wind turbine. Therefore, it is necessary to propose further solutions to the above problems.

Summary of the invention

The present invention aims to provide a wind power generation system to overcome the shortcomings in the prior art.

To solve the above technical problems, the technical solution of the present invention is:

A wind power generation system includes: a blade, a main frame, a hub shaft, a tower, and a power generation device;

The blade is installed on the hub shaft and drives the hub shaft to rotate. The power generating device and the hub shaft are installed in a high-altitude engine room. The hub shaft is arranged by a plurality of small circular arrays on the main frame. Ring-shaped bearing support composed of bearings, the power generating device converts the power input by the blades into electrical energy, and the tower supports the nacelle;

The power generation device includes a power input mechanism, a transmission mechanism, and a generator, and the power input mechanism drives the generator to generate power through the transmission mechanism;

The power input mechanism includes asynchronously provided: a first power input unit and a second power input unit, and the first power input unit and the second power input unit are arranged side by side on the hub shaft;

Any power input unit includes: a main plate, an L-shaped swing lever, and a moving pulley that is engaged with the main plate;

The main disk is sleeved on the hub shaft and moves synchronously with the rotation of the hub shaft. A plurality of main protrusions are arranged at equal intervals on the side wall in the circumferential direction of the main disk. A plurality of push wheels corresponding to the positions and numbers of the main protrusions are provided on a side wall of

The mobile pulley includes a carriage rack pushed by the main protrusion and a vehicle body that is disengaged from the main plate for reciprocating sliding. One end of the sliding stroke of the mobile pulley is an initial position, and the other end is a cutout. Position, the L-shaped swing bar is pivotally connected to the main frame of the main plate and is disposed toward the side wall of the main plate. When the moving pulley is in the cut-out position, the push wheel pushes the L The swing lever is pivoted, and the L-shaped swing lever pushes the moving pulley to cut out;

The transmission mechanism includes a transmission gear and a first transmission unit and a second transmission unit which are arranged asynchronously.

As an improvement of the wind power generation system of the present invention, the L-shaped swing link has a long arm and a short arm connected perpendicularly to one end of the long arm, and the pivotal connection point between the L-shaped swing arm and the main frame is at The long arm is arranged near the short arm.

As an improvement of the wind power generation system of the present invention, a keyway is matched between the vehicle body and the tackle hanger, and a spring is also provided between the vehicle body and the tackle hanger.

As an improvement of the wind power generation system of the present invention, any transmission unit includes: a speed regulating mechanism, a clutch mechanism, and a reset mechanism;

The speed regulating mechanism is installed on gear shafts on both sides of the transmission gear, and the speed regulating mechanism on either side includes: a sleeve shaft, a speed regulating block, a screw, and a driving bevel gear ring;

The sleeve shaft includes a disc body mounted on a gear shaft of the transmission gear and rotating synchronously with the gear shaft, and at least three sliding grooves are formed on the disc body, and any of the sliding grooves is provided. The screw rod and a speed regulating block which is screwed to the screw rod and slide along the sliding groove are arranged in the driving sleeve, the driving bevel gear ring is sleeved on the disc body, and is connected with the One end of the screw rod is drivingly connected. The driving bevel gear ring has a first rotation direction and a second rotation direction opposite to the first rotation direction. When the driving bevel gear ring rotates in the first rotation direction, The transmission of the screw rod drives the speed control block away from the gear shaft, and when rotating in the second rotation direction, the transmission of the screw rod drives the speed adjustment block to move closer to the gear shaft;

The clutch mechanism is installed on the gear shafts on both sides of the transmission gear and is located on one side of the speed regulation mechanism. The clutch mechanisms on both sides are asynchronously arranged, and the transmission gear is engaged with the speed regulation mechanism through the clutch mechanism Synchronized movement, the sleeve shaft is connected with the moving pulley of the corresponding power input unit through a composite steel belt, the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft;

The transmission gear meshes with a driven gear sleeved on the power generating shaft.

As an improvement of the wind power generation system of the present invention, there are three disc bodies, and a winding groove of a composite steel strip is formed between adjacent disc bodies; the speed regulating block includes: integrally formed or connected to each other. And a winding part, the sliding part is screwed to the screw rod and slides along the sliding groove, and the winding part is located between adjacent disc bodies; on the three sliding parts of any speed regulating block Both are provided with screw holes screwed with the screw rods.

As an improvement of the wind power generation system of the present invention, the clutch mechanism includes: a locking claw block, a driving hoop, a driving collar, and a clutch gear plate;

The number of the locking claw blocks is several, and the plurality of locking claw blocks are distributed against the inner side of the driving hoop against each other, and are in close contact with the driving hoop through a wedge-shaped surface thereon, and The locking claw block is slidably connected with the driving side sleeve by the dovetail groove. The clutch gear disk is sleeved on the gear shaft of the transmission gear. The clutch gear disk is located inside the locking claw blocks. And coupled with the locking claw block, the driving hoop and the locking claw block are sleeved in a side key groove of the transmission gear through a side spline, and the driving collar includes a first driving collar and a second A driving collar, wherein the first driving collar and the second driving collar are sleeved on the outer ring of the driving hoop, and are respectively connected to the driving collar through a thread; the first driving collar and the second driving collar The ring is opposite to the direction of the connecting thread of the driving hoop.

As an improvement of the wind power generation system of the present invention, when the first driving collar is kept stationary, the driving hoop drives the locking claw block to move to the center with the rotation of the transmission gear. The clutch gear is tightly engaged; when the second driving collar is kept stationary, the driving hoop drives the locking claw block to move outward from the clutch gear as the transmission gear rotates.

As an improvement of the wind power generation system of the present invention, one side of any of the locking claw block and the clutch gear plate is provided with a fine first meshing tooth, and the clutch gear is coupled to the locking claw block. One side is provided with fine second meshing teeth.

As an improvement of the wind power generation system of the present invention, the driving hoop includes a main body and a protruding block which is integrally extended from the main body and cooperates with the locking claw block.

As an improvement of the wind power generation system of the present invention, any of the locking claw blocks includes a clutch portion and a sliding portion integrally formed with or fixedly connected to the clutch portion, the clutch portion is engaged with the clutch gear plate, and the sliding The part slides along the keyway.

As an improvement of the wind power generation system of the present invention, any transmission unit includes: a sleeve shaft, a clutch mechanism, a transmission gear, and a reset mechanism;

The sleeve shaft is a hollow shaft sleeved on a gear shaft on one side of the transmission gear, and the sleeve shaft has a fixed transmission ratio;

The clutch mechanism is mounted on a gear shaft on the side of the transmission gear and is located on the side of the sleeve shaft. The two sets of clutch mechanisms are arranged asynchronously, and the transmission gear moves synchronously with the engagement of the sleeve shaft through the clutch mechanism. The sleeve shaft is connected to the mobile pulley of the corresponding power input unit through a composite steel belt, and the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft;

The transmission gear meshes with a driven gear sleeved on a generator shaft.

The number of the locking claw blocks is several, and the plurality of locking claw blocks are distributed against the inner side of the driving hoop against each other, and are in close contact with the driving hoop through a wedge-shaped surface thereon, and The locking claw block is slidably connected with the driving side sleeve by the dovetail groove. The clutch gear disk is sleeved on the gear shaft of the transmission gear. The clutch gear disk is located inside the locking claw blocks. And coupled with the locking claw block, the driving hoop and the locking claw block are sleeved in a side key groove of the driven disk through a side spline, and the driving collar includes a first driving collar and a first Two driving collars, the first driving collar and the second driving collar are sleeved on the outer ring of the driving hoop, and are respectively connected to the driving hoop by screwing, the first driving collar and the second driving The collar is opposite to the direction of the connecting thread of the driving hoop.

As an improvement of the wind power generation system of the present invention, when the first driving collar is kept stationary, the driving hoop drives the locking claw block to move to the center with the rotation of the transmission gear. The clutch gear meshes tightly.

As an improvement of the wind power generation system of the present invention, when the second driving collar is kept stationary, the driving hoop drives the locking claw block to move outward with the rotation of the driven disc and the The clutch gear is disengaged.

As an improvement of the wind power generation system of the present invention, the wind power generation system further includes a hydraulic tensioning mechanism, which is located below the composite steel belt, and includes: a spring self-resetting oil cylinder, a fixed pulley, and a fixed pulley A bracket, the fixed pulley is mounted on the fixed pulley bracket, the spring self-resetting oil cylinder is drivingly connected with the fixed pulley bracket, and drives selective contact with the fixed pulley and the composite steel belt by.

As an improvement of the wind power generation system of the present invention, when the mobile pulley drives the gear shaft to rotate, the spring self-reset cylinder piston ejects and tightens the composite steel belt to tighten the rope; before the mobile pulley is cut out, The spring self-resetting oil cylinder releases pressure, the piston of the spring self-resetting oil cylinder drops the slackline, and the moving pulley is unloaded.

As an improvement of the wind power generation system of the present invention, the hub shaft is a hollow shaft provided therethrough, and an impeller is installed in the hub shaft, and the impeller has another hydraulic power generation device provided separately from the power generation device.

As an improvement of the wind power generation system of the present invention, the main disk starts from the circumference of the main disk toward the main convex side, and the main disk is arranged in a stepped shape along the winding area of the composite steel strip.

As an improvement of the wind power generation system of the present invention, the power input mechanism and the transmission mechanism are a plurality of groups that cooperate with each other.

As an improvement of the wind power generation system of the present invention, the generator is a high-voltage squirrel cage asynchronous generator.

As an improvement of the wind power generation system of the present invention, the wind power generation system further includes: a box transformer;

The box transformer is located on the ground and is arranged near the tower. The generator is a medium-voltage double-fed asynchronous generator equipped with a frequency converter and a box transformer.

The transmission mechanism includes a transmission gear and a first transmission unit and a second transmission unit that are asynchronously arranged, and any transmission unit includes: a speed regulating mechanism, a one-way bearing, a transmission gear, and a reset mechanism;

The sleeve shaft includes a disc body mounted on a gear shaft of the transmission gear and rotating synchronously with the gear shaft, and at least three sliding grooves are formed on the disc body, and any of the sliding grooves is provided. The screw rod and a speed regulating block which is screwed to the screw rod and slide along the sliding groove are arranged in the driving sleeve, the driving bevel gear ring is sleeved on the disc body, and is connected with the sliding groove in each of the sliding grooves. One end of the screw rod is drivingly connected. The driving bevel gear ring has a first rotation direction and a second rotation direction opposite to the first rotation direction. When the driving bevel gear ring rotates in the first rotation direction, The transmission of the screw rod drives the speed control block away from the gear shaft, and when rotating in the second rotation direction, the transmission of the screw rod drives the speed adjustment block to move closer to the gear shaft;

The one-way bearing is installed on a gear shaft on both sides of the transmission gear, and is located on one side of the speed regulating mechanism. The one-way bearings on both sides are asynchronously arranged, and the transmission gear passes the one-way The bearings move synchronously, the sleeve shaft is connected with the moving pulley of the corresponding power input unit through a composite steel belt, the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft ;

The transmission gear meshes with a driven gear sleeved on a power generating shaft;

The generator is a high-voltage squirrel cage asynchronous generator.

Compared with the prior art, the present invention has the beneficial effect that the present invention uses a drag-type belt transmission method, and the two power input units and the speed control sleeve shaft are connected by a composite steel belt to drive the gear set and the generator to work.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

1 is a schematic perspective view of a wind power generation system according to the present invention;

2 is an enlarged perspective view of the hub shaft and the power generating device in FIG. 1;

FIG. 3 is an enlarged perspective view of the main disk in FIG. 2; FIG.

FIG. 4 is a schematic enlarged perspective view of a power generating device according to an embodiment; FIG.

5 is an enlarged perspective view of the transmission mechanism in FIG. 4;

FIG. 6 is an enlarged perspective view of a power generating device in another embodiment; FIG.

7 is an enlarged perspective view of the transmission mechanism in FIG. 6;

FIG. 8 is an enlarged perspective view of the clutch mechanism in FIG. 6.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIGS. 1 to 8, the wind power generation system of the present invention includes: a blade 1, a main frame, a hub shaft 3, a tower 4, and a power generation device 5.

Wherein, the blade 1 is installed on the hub shaft 3 and drives the hub shaft 3 to rotate. The power generating device 5 and the hub shaft 3 are installed in a high-altitude engine room, and the hub shaft 3 is mounted on the main frame. A plurality of ring-shaped bearing supports formed by arranging small bearings in a circular array, the power generating device 5 converts the power input by the blades 1 into electric energy, and the tower 4 supports the nacelle.

Wherein, the hub shaft 3 is a hollow shaft provided therethrough, and an impeller 6 is installed in the hub shaft 3, and the impeller 6 has another hydraulic power generation device 5 provided independently from the power generation device 5. The impeller 6 located in the hub shaft 3 is operated to generate electricity within a range from the wind speed at which the main system operates to the wind speed at which the main system operates.

Specifically, the power generation device 5 includes a power input mechanism 7, a transmission mechanism 8, and a generator 9, and the power input mechanism 7 drives the generator 9 to generate power through the transmission mechanism 8. Wherein, the power input mechanism 7 and the transmission mechanism 8 are a plurality of groups that cooperate with each other. Preferably, the power input mechanism 7 and the transmission mechanism 8 are a group.

The power input mechanism 7 includes asynchronously provided: a first power input unit 10 and a second power input unit 11, and the first power input unit 10 and the second power input unit 11 are arranged side by side on the same hub shaft 3.

Any power input unit includes: a main plate 12, an L-shaped swing link 13, and a moving pulley 14 that is engaged with the main plate 12.

The main disk 12 is sleeved on the hub shaft 3 and moves synchronously with the rotation of the hub shaft 3. Therefore, the hub shaft 3 transmits the kinetic energy of the blade 1 to the main disk 12 to drive it to rotate. Wherein, a plurality of main protrusions 15 are provided on the side wall in the circumferential direction of the main plate 12 at equal intervals, and side walls on both sides of the main plate 12 are provided corresponding to the positions and number of the main protrusions 15. Multiple push wheels.

In addition, the main disk 12 starts from the outer circle on the side of the main protrusion 15 and sets the main disk 12 in a stepped shape along the winding area of the composite steel strip. The main disk 12 is modified to be driven by the composite steel belt. The speed difference caused by the multiple overlapping of the composite steel strip when the sleeve shaft rotates.

The moving pulley 14 includes a carriage hanger 16 pushed by the main protrusion 15 for reciprocating sliding, and a vehicle body 17 that is disengaged from the main plate 12. One end of the sliding stroke of the moving pulley 14 is an initial position. , The other end is the cut-out position.

In addition, a keyway is matched between the vehicle body 17 and the tackle hanger 16, and a spring is also provided between the vehicle body 17 and the tackle hanger 16. By providing the spring, when the movable pulley 14 is reset, the spring in the key groove of the vehicle body 17 and the carriage hanger 16 can pull up the vehicle body 17 to be able to cooperate with the main protrusion 15 The height is convenient for the main protrusion 15 to drive the vehicle body 17 to perform synchronous movement.

Further, the L-shaped swing link 13 is pivotally connected to the main frame of the main plate 12 and is disposed toward a side wall of the main plate 12. When the moving pulley 14 is located at the cut-out position, the pusher 13 The wheel pushes the L-shaped swing lever 13 to pivot, and the L-shaped swing lever 13 pushes the moving pulley 14 to cut out.

In one embodiment, the L-shaped swing link 13 has a long arm and a short arm connected perpendicularly to one end of the long arm, and a pivotal connection point between the L-shaped swing arm and the main frame is located in the long On the arm and close to the short arm.

Therefore, before the push wheel rotates with the main plate 12 to the cut-out position, the push wheel pushes the L-shaped swing lever 13 short arm to drive the L-shaped swing lever 13 to rotate, and the L-shaped swing lever 13 The end of the long arm of the rod 13 is pressed down with the rotation of the L-shaped swing rod 13 to drive the vehicle body 17 away from the main protrusion 15, and compress the spring in the key slot of the frame suspended by the vehicle head and the moving pulley 14. . When the vehicle body 17 is reset after disengaging from the main protrusion 15, the vehicle body 17 is pulled up to a height matching the main protrusion 15 by a spring in the key groove of the vehicle body 17 and the moving pulley 14.

The transmission mechanism 8 includes a transmission gear 18 and a first transmission unit 19 and a second transmission unit 20 which are arranged asynchronously. Therefore, the first transmission unit 19 and the second transmission unit 20 are asynchronously staggered, and the two are alternately reciprocated to cooperate. The corresponding clutch mechanism 22 realizes continuous rotation driving of 9 axes of the generator.

In one embodiment, as shown in FIGS. 4 and 5: Specifically, any transmission unit includes: a speed regulating mechanism 21, a clutch mechanism 22, and a reset mechanism 23. The transmission gear 18 meshes with a driven gear sleeved on the power generating shaft.

The speed regulating mechanism 21 includes a sleeve shaft 24, a speed regulating block 25, a lead screw 26, and a driving bevel gear ring 27.

The sleeve shaft 24 forms the main structure of the wind power stepless speed regulating device of the present invention, and realizes the installation and fixing of the speed regulating block 25, the lead screw 26, and the driving bevel gear ring 27.

Specifically, the sleeve shaft 24 includes a disc body mounted on a gear shaft of the transmission gear 18 and rotating synchronously with the gear shaft. The disc body is provided with at least three sliding grooves, and any one of the sliding grooves is provided with the screw rod and a speed regulating block 25 screwed to the screw rod and sliding along the sliding groove.

The speed regulating block 25 is also used as a transmission shaft wound around a transmission belt. The driving bevel gear ring 27 is sleeved on the disc body and is drivingly connected to one end of a screw rod in each sliding groove. Correspondingly, a bevel gear is provided at one end of any of the screw rods and the driving bevel gear ring 27.

Preferably, at least three sliding grooves are circumferentially distributed at equal intervals on the peripheral side of the gear shaft. Further preferably, the number of the sliding grooves is five. The included angle between adjacent sliding grooves is 72 °.

The driving bevel gear ring 27 has a first rotation direction and a second rotation direction opposite to the first rotation direction. Therefore, when the driving bevel gear ring 27 rotates in the first rotation direction, the speed control block 25 is driven away from the gear shaft by the transmission of the screw rod, and when it rotates in the second rotation direction, The speed control block 25 is driven to move closer to the gear shaft by the transmission of the screw rod.

Stepless speed regulating device driving process: when the driving bevel gear ring 27 is rotating forward, several screw screws 26 are driven to rotate with their own central axis as the rotating shaft, and the screw screw 26 is driven to drive several speed regulating blocks. 25 expands outward, the diameter of the drive shaft becomes larger. When the driving bevel gear ring 27 is reversed, a plurality of the screw rods 26 are simultaneously driven to rotate with their own central axis as the rotation axis. The screw rod 26 is driven to rotate and drive several of the speed control blocks 25 to contract inward. The diameter becomes smaller, so that the transmission ratio is changed.

In one embodiment, the number of the disc bodies is three, and steel strip winding grooves are formed between adjacent disc bodies. At this time, the speed regulating block 25 includes a sliding part and a winding part that are integrally formed or connected to each other, the sliding part is screwed to the screw rod and slides along the sliding groove, and the winding part is located at a phase Between adjacent disc bodies. In order to be screwed with the screw rod, three sliding portions of any speed regulating block 25 are provided with screw holes screwed with the screw rod.

The clutch mechanism 22 is mounted on the gear shafts on both sides of the transmission gear 18 and is located on one side of the speed regulating mechanism 21. The clutch mechanisms 22 on both sides are arranged asynchronously, and the transmission gear 18 follows the speed regulating mechanism. 21 moves synchronously through the engagement of the clutch mechanism 22. At the same time, the speed governing mechanism 21 is drivingly connected to the mobile pulley 14 of the corresponding power input unit through a composite steel belt. Therefore, the main plate 12 can pull the composite steel belt through the moving pulley 14 and further drive the gear shaft of the transmission gear 18 to rotate to realize power output.

The reset mechanism 23 is used for resetting the moving block 14 and includes a weight rack. The weight rack is engaged with a gear ring at one end of the sleeve shaft 24 and performs a lifting movement. Therefore, the weight rack rises and accumulates energy when the gear rack is driven with the gear ring. When the clutch mechanism 22 is in a disengaged state, the weight rack falls due to gravity, and the sleeve shaft 24 is driven by the rack cooperation Turn, and the composite steel belt pulls the moving pulley 14 to reset.

The clutch mechanism 22 may be a clutch clutch mechanism 22 with a locking claw block 28. In addition, the clutch mechanism 22 may also be replaced by a one-way bearing, wherein the one-way bearing is an existing bearing.

When the clutch mechanism 22 is held for the locking claw block 28, the clutch mechanism 22 includes a locking claw block 28, a driving hoop 29, a driving collar 30, and a clutch gear plate 31. Preferably, the driving hoop 29, the driving collar 30, and the clutch gear disc 31 are arranged concentrically according to the mutual position relationship.

Wherein, the locking claw blocks 28 are several, and the plurality of locking claw blocks 28 are distributed against the inner side of the driving hoop 29 against each other, and pass through the wedge surface on the driving hoop 29. The abutment is performed, and the abutting side of the locking claw block 28 and the driving hoop 29 is slidingly connected through a dovetail groove.

The clutch gear plate 31 is sleeved on the gear shaft of the transmission gear 18, and the clutch gear plate 31 is located inside the plurality of locking claw blocks 28, and is engaged with the locking claw blocks 28. The driving hoop 29 and the locking claw block 28 are sleeved in a side key groove of the transmission gear 18 through a side spline.

In order to realize the clutching action between the plurality of locking claw blocks 28 and the clutch gear plate 31, a side of any one of the locking claw blocks 28 and the clutch gear plate 31 is provided with fine first meshing teeth, A fine second meshing tooth is provided on a side of the clutch gear and the locking claw block 28. Therefore, when the plurality of locking claw blocks 28 mesh with the clutch gear plate 31, they can be driven to rotate; when they are separated, the application of force can be stopped.

The driving collar 30 is used for driving the driving collar 29 to move. Specifically, the driving collar 30 includes a first driving collar 30 and a second driving collar 30. The first driving collar 30 And a second driving collar 30 are sleeved on the outer ring of the driving hoop 29, and are respectively connected to the driving hoop 29 by threads; the first driving collar 30 and the second driving collar 30 and the driving hoop The connection threads of the sleeve 29 are opposite. In this way, the connection threads between the first driving collar 30 and the second driving collar 30 and the driving hoop 29 also have a self-locking function.

In one embodiment, the driving hoop 29 includes a main body and a protrusion that is integrally extended from the main body and cooperates with the locking claw block 28. Correspondingly, any one of the locking claw blocks 28 includes a clutch portion and a sliding portion integrally formed with or fixedly connected to the clutch portion, the clutch portion is coupled to the clutch gear plate 31, and the sliding portion is along the The keyway slides.

When the first driving collar 30 remains fixed, the driving hoop 29 drives the locking claw block 28 to move to the center to engage with the clutch gear with the rotation of the transmission gear 18. When the second driving collar 30 remains fixed, the driving hoop 29 drives the locking claw block 28 to move outward from the clutch gear as the driving gear 18 rotates.

Specifically, when the clutch gear plate 31 cooperates with the gear shaft of the transmission gear 18, the first driving collar 30 is fixed under external control, and the driving hoop is driven as the gear shaft rotates. 29 rotation, through the thread relationship, the driving hoop 29 moves forward and axial. The driving hoop 29 drives the locking claw block 28 to move toward the center to hold the clutch gear disc 31 through a wedge-shaped block structure. After being fully tightened, the first driving collar 30 is separated from the external control and rotates synchronously with the clutch mechanism 22 and the transmission gear 18.

When the clutch gear plate 31 is disengaged from the gear shaft of the transmission gear 18, the second driving collar 30 is fixed under external control, and the driving hoop 29 is rotated as the driven shaft rotates. Through the thread relationship, the driving hoop 29 moves in the opposite axial direction. The driving hoop 29 drives the locking claw block 28 to move outward from the clutch gear through a wedge-shaped block structure. After being completely disengaged, the second driving collar 30 is disconnected from the external control and synchronously rotates with the clutch mechanism 22 and the transmission gear 18.

In one embodiment, as shown in FIG. 6-8, any transmission unit includes: a sleeve shaft 21, a clutch mechanism 22, and a reset mechanism 23. The transmission gear 18 meshes with a driven gear sleeved on the shaft of the generator 9.

The sleeve shaft 21 is a hollow shaft, which is sleeved on a gear shaft on one side of the transmission gear 18. The sleeve shaft 21 has a fixed transmission ratio.

The clutch mechanism 22 is mounted on a gear shaft on one side of the transmission gear 18 and is located on the sleeve shaft 21 side. Two sets of clutch mechanisms 22 are provided asynchronously, and the transmission gear 18 passes with the sleeve shaft 21. The meshing of the clutch mechanism 22 moves synchronously. At the same time, the sleeve shaft 21 is drivingly connected to the mobile pulley 14 of the corresponding power input unit through a composite steel belt. Therefore, the main disk 12 can pull the composite steel belt through the moving pulley 14 and further drive the gear shaft of the transmission gear 18 to rotate to realize power output.

The reset mechanism 23 is used for resetting the moving block 14 and includes a weight rack, which is engaged with a gear ring at one end of the sleeve shaft 21 and performs a lifting movement. Therefore, the weight rack rises and accumulates energy when it is driven with the gear ring. When the clutch mechanism 22 is in a disengaged state, the weight rack falls due to gravity, and the sleeve shaft 21 is driven by the rack cooperation Turn, and the composite steel belt pulls the moving pulley 14 to reset.

The clutch mechanism 22 may be a locking claw block clutch clutch mechanism 22. In addition, the clutch mechanism 22 may also be replaced by a one-way bearing, wherein the one-way bearing is an existing bearing.

When holding the clutch mechanism 22 for the locking claw block, the clutch mechanism 22 includes: a locking claw block 24, a driving hoop 25, a driving collar 26, and a clutch gear plate 27. Preferably, the driving hoop 25, the driving collar 26, and the clutch gear disc 27 are arranged concentrically according to the mutual position relationship.

Wherein, the locking claw blocks 24 are several, and the plurality of locking claw blocks 24 are distributed against the inner side of the driving hoop 25 against each other, and pass through the wedge-shaped surface thereon. The abutment is performed, and the abutting side of the locking claw block 24 and the driving hoop 25 is slidingly connected through a dovetail groove.

The clutch gear disc 27 is sleeved on the gear shaft of the transmission gear 18, and the clutch gear disc 27 is located inside the plurality of locking claw blocks 24, and is engaged with the locking claw blocks 24. The driving hoop 25 and the locking claw block 24 are sleeved in a side key groove of the transmission gear 18 through a side spline.

In order to realize the clutching action between the plurality of locking claw blocks 24 and the clutch gear disc 27, a side of any one of the locking claw blocks 24 and the clutch gear disc 27 is provided with fine first meshing teeth, A fine second meshing tooth is provided on a side of the clutch gear and the locking claw block 24. Therefore, when the plurality of locking claw blocks 24 are engaged with the clutch gear plate 27, they can be driven to rotate; when they are separated, the application of force can be stopped.

The driving collar 26 is used for driving the driving collar 25 to move. Specifically, the driving collar 26 includes a first driving collar and a second driving collar, and the first driving collar and the second driving collar The driving collar is sleeved on the outer ring of the driving hoop 25, and is connected to the driving hoop 25 by screws, respectively. The direction of the connecting thread of the first driving collar and the second driving collar and the driving hoop 25 is in contrast. In this way, the connection threads between the first and second driving collars and the driving hoop 25 also have a self-locking function.

In one embodiment, the driving hoop 25 includes a main body and a protrusion that is integrally extended from the main body and cooperates with the locking claw block 24. Correspondingly, any one of the locking claw blocks 24 includes a clutch portion and a sliding portion integrally formed with or fixedly connected to the clutch portion, the clutch portion is coupled to the clutch gear plate 27, and the sliding portion is along the The keyway slides.

When the first driving collar is kept stationary, the driving hoop 25 drives the locking claw block 24 to move to the center to engage with the clutch gear with the rotation of the transmission gear 18. When the second driving collar remains fixed, the driving hoop 25 drives the locking claw block 24 to move outward from the clutch gear as the driven disk rotates.

Specifically, when the clutch gear plate 27 cooperates with the gear shaft of the transmission gear 18, the first driving collar is fixed under external control, and the driving hoop 25 is driven as the gear shaft rotates. Rotating, through a threaded relationship, the driving hoop 25 moves forward and axially. The driving hoop 25 drives the locking claw block 24 to move toward the center to hold the clutch gear disc 27 through a wedge-shaped block structure. After being fully tightened, the first driving collar is separated from the external control and rotates synchronously with the clutch mechanism 22 and the transmission gear 18.

When the clutch gear disk 27 is disengaged from the gear shaft of the transmission gear 18, the second driving collar is fixed under external control, and the driving hoop 25 is rotated as the driven shaft rotates. By means of a threaded relationship, the drive hoop 25 moves in the opposite axial direction. The driving hoop 25 drives the locking claw block 24 to move outward from the clutch gear through a wedge-shaped block structure. After being completely disengaged, the second driving collar is disconnected from external control, and rotates synchronously with the clutch mechanism 22 and the transmission gear 18.

As shown in FIG. 3, in order to facilitate the clutch between the mobile pulley 14 and the main plate 12, the wind power generation system further includes a hydraulic tensioning mechanism 32, which is located below the composite steel belt. It includes: a spring self-resetting cylinder 33, a fixed pulley 34 and a fixed pulley bracket 35. Wherein, the fixed pulley 34 is mounted on the fixed pulley bracket 35, the spring self-resetting cylinder 33 is drivingly connected to the fixed pulley bracket 35, and drives the fixed pulley 34 and the composite steel belt Perform selective abutment.

Therefore, when the moving pulley 14 drives the gear shaft to rotate, the spring self-reset oil cylinder 33 piston ejects and tightens the composite steel belt; before the moving pulley 14 is cut out, the spring self-resets. The pressure of the oil cylinder 33 is relieved, and the spring drops the slack rope from the piston of the reset oil cylinder 33 to assist the unloading of the moving pulley 14.

The generator 9 is a high-voltage squirrel cage asynchronous generator 9. Since the speed regulating mechanism 21 is provided, stable output can be achieved, so that the high-voltage squirrel cage asynchronous generator 9 does not need to be equipped with a frequency converter and a box transformer.

Alternatively, the wind power generation system may further include a box transformer (not shown). At this time, the box transformer is located on the ground and is arranged near the tower, and the generator is a medium-voltage double-fed asynchronous generator equipped with a frequency converter and a box transformer.

In summary, the present invention uses a drag-type belt transmission method, and the two power input units and the speed regulating sleeve shaft are connected by a composite steel belt to drive the gear set and the generator to work. At the same time, the inverters and box transformers of traditional wind turbines are eliminated, and high-voltage squirrel cage asynchronous generators are used in conjunction with stepless speed regulation devices to achieve continuous and stable power output, which has high power generation efficiency and good environmental benefits.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, the embodiments are to be regarded as exemplary and non-limiting in every respect, and the scope of the present invention is defined by the appended claims rather than the above description, and therefore is intended to fall within the claims. All changes that are within the meaning and scope of equivalent elements are encompassed by the invention. Any reference signs in the claims should not be construed as limiting the claims involved.

In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment includes only an independent technical solution. This description of the specification is for clarity only, and those skilled in the art should take the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

A wind power generation system, characterized in that the wind power generation system includes: a blade, a main frame, a hub shaft, a tower, and a power generation device;

The blade is installed on the hub shaft and drives the hub shaft to rotate. The power generating device and the hub shaft are installed in a high-altitude engine room. The hub shaft is arranged by a plurality of small circular arrays on the main frame. Ring-shaped bearing support composed of bearings, the power generating device converts the power input by the blades into electrical energy, and the tower supports the nacelle;

The power generation device includes a power input mechanism, a transmission mechanism, and a generator, and the power input mechanism drives the generator to generate power through the transmission mechanism;

The power input mechanism includes asynchronously provided: a first power input unit and a second power input unit, and the first power input unit and the second power input unit are arranged side by side on the hub shaft;

Any power input unit includes: a main plate, an L-shaped swing lever, and a moving pulley that is engaged with the main plate;

The main disk is sleeved on the hub shaft and moves synchronously with the rotation of the hub shaft. A plurality of main protrusions are arranged at equal intervals on the side wall in the circumferential direction of the main disk. A plurality of push wheels corresponding to the positions and numbers of the main protrusions are provided on a side wall of

The mobile pulley includes a carriage rack pushed by the main protrusion and a vehicle body that is disengaged from the main plate for reciprocating sliding. One end of the sliding stroke of the mobile pulley is an initial position, and the other end is a cutout. Position, the L-shaped swing bar is pivotally connected to the main frame of the main plate and is disposed toward the side wall of the main plate. When the moving pulley is in the cut-out position, the push wheel pushes the L The swing lever is pivoted, and the L-shaped swing lever pushes the moving pulley to cut out;

The transmission mechanism includes a transmission gear and a first transmission unit and a second transmission unit which are arranged asynchronously.
The wind power generation system according to claim 1, wherein the L-shaped swing arm has a long arm and a short arm connected perpendicularly to one end of the long arm, and the L-shaped swing arm is connected to the main frame. The pivot connection point is located on the long arm and is disposed near the short arm.
The wind power generation system according to claim 1, wherein a keyway is matched between the vehicle body and the tackle hanger, and a spring is further provided between the vehicle body and the tackle hanger.
The wind power generation system according to claim 1, wherein any transmission unit comprises: a speed regulating mechanism, a clutch mechanism, and a reset mechanism;

The speed regulating mechanism is installed on gear shafts on both sides of the transmission gear, and the speed regulating mechanism on either side includes: a sleeve shaft, a speed regulating block, a screw, and a driving bevel gear ring;

The sleeve shaft includes a disc body mounted on a gear shaft of the transmission gear and rotating synchronously with the gear shaft, and at least three sliding grooves are formed on the disc body, and any of the sliding grooves is provided. The screw rod and a speed regulating block which is screwed to the screw rod and slide along the sliding groove are arranged in the driving sleeve, the driving bevel gear ring is sleeved on the disc body, and is connected with the One end of the screw rod is drivingly connected. The driving bevel gear ring has a first rotation direction and a second rotation direction opposite to the first rotation direction. When the driving bevel gear ring rotates in the first rotation direction, The transmission of the screw rod drives the speed control block away from the gear shaft, and when rotating in the second rotation direction, the transmission of the screw rod drives the speed adjustment block to move closer to the gear shaft;

The clutch mechanism is installed on the gear shafts on both sides of the transmission gear and is located on one side of the speed regulation mechanism. The clutch mechanisms on both sides are asynchronously arranged, and the transmission gear is engaged with the speed regulation mechanism through the clutch mechanism Synchronized movement, the sleeve shaft is connected with the moving pulley of the corresponding power input unit through a composite steel belt, the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft;

The transmission gear meshes with a driven gear sleeved on the power generating shaft.
The wind power generation system according to claim 4, wherein there are three disc bodies, and a winding groove of a composite steel strip is formed between adjacent disc bodies; and the speed regulating block comprises: integrally formed Or a sliding part and a winding part connected to each other, the sliding part is screwed to the screw rod and slides along the sliding groove, and the winding part is located between adjacent disc bodies; Each of the three sliding portions is provided with a screw hole screwed with the screw rod.
The wind power generation system according to claim 4, wherein the clutch mechanism comprises: a locking claw block, a driving hoop, a driving collar, and a clutch gear plate;

The number of the locking claw blocks is several, and the plurality of locking claw blocks are distributed against the inner side of the driving hoop against each other, and are in close contact with the driving hoop through a wedge-shaped surface thereon, and The locking claw block is slidably connected with the driving side sleeve by the dovetail groove. The clutch gear disk is sleeved on the gear shaft of the transmission gear. The clutch gear disk is located inside the locking claw blocks. And coupled with the locking claw block, the driving hoop and the locking claw block are sleeved in a side key groove of the transmission gear through a side spline, and the driving collar includes a first driving collar and a second A driving collar, wherein the first driving collar and the second driving collar are sleeved on the outer ring of the driving hoop, and are respectively connected to the driving collar through a thread; the first driving collar and the second driving collar The ring is opposite to the direction of the connecting thread of the driving hoop.
The wind power generation system according to claim 6, characterized in that, when the first driving collar is kept stationary, the driving hoop drives the locking claw block to rotate along with the rotation of the transmission gear. The core motion is tightly meshed with the clutch gear; when the second driving collar is kept stationary, the driving hoop drives the locking claw block to move outward with the rotation of the driving gear The clutch gear is disengaged.
The wind power generation system according to claim 6, characterized in that a side of any one of the locking claw blocks and the clutch gear plate is provided with a fine first meshing tooth, and the clutch gear and the lock The side of the clutch claw block is provided with fine second meshing teeth.
The wind power generation system according to claim 6, wherein the driving hoop comprises a main body and a protruding block which is integrally extended from the main body and cooperates with the locking claw block.
The wind power generation system according to claim 6, wherein any one of the locking claw blocks includes a clutch portion and a sliding portion integrally formed or fixedly connected with the clutch portion, and the clutch portion is in phase with the clutch gear plate. Clutch, the sliding part slides along the keyway.
The wind power generation system according to claim 1, wherein any transmission unit comprises: a sleeve shaft, a clutch mechanism, a transmission gear, and a reset mechanism;

The sleeve shaft is a hollow shaft sleeved on a gear shaft on one side of the transmission gear, and the sleeve shaft has a fixed transmission ratio;

The clutch mechanism is mounted on a gear shaft on the side of the transmission gear and is located on the side of the sleeve shaft. The two sets of clutch mechanisms are arranged asynchronously, and the transmission gear moves synchronously with the engagement of the sleeve shaft through the clutch mechanism. The sleeve shaft is connected to the mobile pulley of the corresponding power input unit through a composite steel belt, and the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft;

The transmission gear meshes with a driven gear sleeved on a generator shaft.
The wind power generation system according to claim 11, wherein the clutch mechanism comprises: a locking claw block, a driving hoop, a driving collar, and a clutch gear plate;

The number of the locking claw blocks is several, and the plurality of locking claw blocks are distributed against the inner side of the driving hoop against each other, and are in close contact with the driving hoop through a wedge-shaped surface thereon, and The locking claw block is slidably connected with the driving side sleeve by the dovetail groove. The clutch gear disk is sleeved on the gear shaft of the transmission gear. The clutch gear disk is located inside the locking claw blocks. And coupled with the locking claw block, the driving hoop and the locking claw block are sleeved in a side key groove of the driven disk through a side spline, and the driving collar includes a first driving collar and a first Two driving collars, the first driving collar and the second driving collar are sleeved on the outer ring of the driving hoop, and are respectively connected to the driving hoop by screwing, the first driving collar and the second driving The collar is opposite to the direction of the connecting thread of the driving hoop.
The wind power generation system according to claim 12, wherein when the first driving collar is kept stationary, the driving hoop drives the locking claw block toward the driving gear as the transmission gear rotates. The heart motion is tightly meshed with the clutch gear.
The wind power generation system according to claim 12, wherein when the second driving collar is kept stationary, the driving hoop drives the locking claw block with the rotation of the driven disc. The outward movement is disengaged from the clutch gear.
The wind power generation system according to claim 12, characterized in that a side of any of the locking claw blocks and the clutch gear disc is provided with a fine first meshing tooth, and the clutch gear and the lock The side of the clutch claw block is provided with fine second meshing teeth.
The wind power generation system according to claim 12, wherein the driving hoop comprises a main body and a protruding block that is integrally extended from the main body and cooperates with the locking claw block.
The wind power generation system according to claim 12, wherein any one of the locking claw blocks includes a clutch portion and a sliding portion integrally formed or fixedly connected with the clutch portion, and the clutch portion is in phase with the clutch gear plate. Clutch, the sliding part slides along the keyway.
The wind power generation system according to claim 1, wherein the wind power generation system further comprises a hydraulic tensioning mechanism, the hydraulic tensioning mechanism is located below the composite steel belt, and comprises a spring self-resetting oil cylinder, A fixed pulley and a fixed pulley bracket, the fixed pulley is mounted on the fixed pulley bracket, the spring self-resetting cylinder is drivingly connected with the fixed pulley bracket, and drives the fixed pulley and the composite steel The belt carries out selective abutment.
The wind power generation system according to claim 18, wherein when the moving pulley drives the gear shaft to rotate, the spring self-reset cylinder piston ejects and tightens the composite steel belt to tighten the rope; when the moving Immediately before the block is cut out, the spring releases pressure from the reset cylinder, the piston of the spring resets the drop cylinder to loosen the rope, and the mobile block is unloaded.
The wind power generation system according to claim 1, wherein the hub shaft is a hollow shaft provided therethrough, and an impeller is installed in the hub shaft, and the impeller has another independently disposed from the power generating device. Hydraulic generator.
The wind power generation system according to claim 1, characterized in that, the main disk starts from the periphery of the main disk to the main convex side, and the main disk is arranged in a stepped shape along the winding area of the composite steel strip.
The wind power generation system according to claim 1, wherein the power input mechanism and the transmission mechanism are a plurality of groups that cooperate with each other.
The wind power generation system according to claim 1, wherein the generator is a high-voltage squirrel cage asynchronous generator.
The wind power generation system according to claim 1, wherein the wind power generation system further comprises: a box-type transformer;

The box transformer is located on the ground and is arranged near the tower. The generator is a medium-voltage double-fed asynchronous generator equipped with a frequency converter and a box transformer.
A wind power generation system, characterized in that the wind power generation system includes: a blade, a main frame, a hub shaft, a tower, and a power generation device;

The blade is installed on the hub shaft and drives the hub shaft to rotate. The power generating device and the hub shaft are installed in a high-altitude engine room. The hub shaft is arranged by a plurality of small circular arrays on the main frame. Ring-shaped bearing support composed of bearings, the power generating device converts the power input by the blades into electrical energy, and the tower supports the nacelle;

The power generation device includes a power input mechanism, a transmission mechanism, and a generator, and the power input mechanism drives the generator to generate power through the transmission mechanism;

The power input mechanism includes asynchronously provided: a first power input unit and a second power input unit, and the first power input unit and the second power input unit are arranged side by side on the hub shaft;

Any power input unit includes: a main plate, an L-shaped swing lever, and a moving pulley that is engaged with the main plate;

The main disk is sleeved on the hub shaft and moves synchronously with the rotation of the hub shaft. A plurality of main protrusions are arranged at equal intervals on the side wall in the circumferential direction of the main disk. A plurality of push wheels corresponding to the positions and numbers of the main protrusions are provided on a side wall of

The mobile pulley includes a carriage rack pushed by the main protrusion and a vehicle body that is disengaged from the main plate for reciprocating sliding. One end of the sliding stroke of the mobile pulley is an initial position, and the other end is a cutout. Position, the L-shaped swing bar is pivotally connected to the main frame of the main plate and is disposed toward the side wall of the main plate. When the moving pulley is in the cut-out position, the push wheel pushes the L The swing lever is pivoted, and the L-shaped swing lever pushes the moving pulley to cut out;

The transmission mechanism includes a transmission gear and a first transmission unit and a second transmission unit that are asynchronously arranged, and any transmission unit includes: a speed regulating mechanism, a one-way bearing, a transmission gear, and a reset mechanism;

The speed regulating mechanism is installed on gear shafts on both sides of the transmission gear, and the speed regulating mechanism on either side includes: a sleeve shaft, a speed regulating block, a screw, and a driving bevel gear ring;

The sleeve shaft includes a disc body mounted on a gear shaft of the transmission gear and rotating synchronously with the gear shaft, and at least three sliding grooves are formed on the disc body, and any of the sliding grooves is provided. The screw rod and a speed regulating block which is screwed to the screw rod and slide along the sliding groove are arranged in the driving sleeve, the driving bevel gear ring is sleeved on the disc body, and is connected with the One end of the screw rod is drivingly connected. The driving bevel gear ring has a first rotation direction and a second rotation direction opposite to the first rotation direction. When the driving bevel gear ring rotates in the first rotation direction, The transmission of the screw rod drives the speed control block away from the gear shaft, and when rotating in the second rotation direction, the transmission of the screw rod drives the speed adjustment block to move closer to the gear shaft;

The one-way bearing is installed on a gear shaft on both sides of the transmission gear, and is located on one side of the speed regulating mechanism. The one-way bearings on both sides are asynchronously arranged, and the transmission gear passes the one-way The bearings move synchronously, the sleeve shaft is connected with the moving pulley of the corresponding power input unit through a composite steel belt, the reset mechanism includes a weight rack, and the weight rack meshes with a gear ring at one end of the sleeve shaft ;

The transmission gear meshes with a driven gear sleeved on a power generating shaft;

The generator is a high-voltage squirrel cage asynchronous generator.